- Made the design more responsive. Aligned the elements again. We're
  still using bootstrap's v3 default grid. I've added a few more media
  queries for responsiveness on screens bigger than 1200px. We'll have
  to watch for those while updating bootstrap though.
- Organised the CSS better on the general layout section.
- Made classes more specific and named them better when used for
  styling in CSS.
- Added some responsive-goodness to the login page (check it out on
  mobile devices! ;) and the general layout.
- Replaced 'Cancel' button on forms for a simple link. There's no need
  for a button with JS!! WTF.
- Refactored a few messages on controllers. This is ready to be
  extracted and I18n-ed again.
- Got the popover ready to implement "delete selected" action.